Sample records for 194ir kodola struktura

  1. New supersymmetric quartet of nuclei: {sup 192,193}Os-{sup 193,194}Ir

    SciTech Connect

    Bijker, R.; Frank, A.; Barea, J.; Graw, G.; Wirth, H.-F.; Hertenberger, R.; Jolie, J.


    We present evidence for the existence of a new supersymmetric quartet of nuclei in the A{approx}190 mass region. The analysis is based on new experimental information on the odd-odd nucleus {sup 194}Ir from transfer and neutron capture reactions. The new data allow the identification of a new supersymmetric quartet, consisting of the {sup 192,193}Os and {sup 193,194}Ir nuclei. We make explicit predictions for {sup 193}Os, and suggest that its spectroscopic properties be measured in dedicated experiments. Finally, we study correlations between different transfer reactions.

  2. Determination of effective resonance energy for the 193Ir(n,γ)194Ir reaction by the cadmium ratio method

    NASA Astrophysics Data System (ADS)

    Budak, Mustafa Guray; Karadag, Mustafa; Yücel, Haluk


    In this work, the effective resonance energy, Ebarr -value for the 193Ir(n,γ)194Ir reaction was measured using cadmium ratio method. A dual monitor (197Au-98Mo), which has convenient resonance properties, was employed for characterization of the irradiation sites. Then analytical grade iridium oxide samples diluted with CaCO3 to lower neutron self-shielding effect stacked in small cylindrical Teflon boxes were irradiated once with a 1 mm thick Cd cylindrical box placed in a thermalized neutron field of an 241Am-Be neutron source then without it. The activities produced in samples during 193Ir(n,γ)194Ir reaction were measured using a p-type HPGe detector γ-ray spectrometer with a 44.8% relative efficiency. The correction factors for thermal, epithermal neutron self-shielding (Gth, Gepi), true coincidence summing (Fcoi) and gamma-ray self-absorption (Fs) effects were determined with appropriate approaches and programs. Thus, the experimental Ebarr -value was determined to be 2.65 ± 0.61 eV for 193Ir target nuclide. The recent data for Q0 and FCd values for Ebarr determination were based on k0-NAA online database. The present experimental Ebarr value was calculated and compared with more recent values for Q0 and FCd for 193Ir. Additionally, the Ebarr -values was theoretically calculated from the up-to-date resonance data obtained from ENDF/B VII library using two different approaches. Since there is no experimentally determined Ebarr -value for the 193Ir isotope, the results are compared with the calculated ones given in the literature.

  3. [Polonia Medyczna: struktura, współczesność i przyszłość].


    Rudnicki, Marek

    It is estimated that approximately 20-25 000 polish physicians practice medicine in different countries outside of Poland, enriching medical workforces in their newly elected countries. The composition of this group, known as "Medical Polonia", has been changing from post Second World War emigration, resulting from the war and its political consequences, thru the next large wave of physicians leaving the communist country in 1980's. The last large group of Polish physicians has taken advantage of training opportunities or have started practices in the European Union, having departed Poland permanently or temporarily, after the country joined the European Union in 2004. The first organizations of Polish physicians outside of Poland were founded almost immediately after WWII in London, Chicago, New York, Paris, Lille, and later in Stockholm. Decades later, re-invigorated by their native country gaining independence after 1989, they organized the first World Congress of Medical Polonia in 1991 (in collaboration with physicians' organization from Poland). The World Federation of Polish Medical Organization Abroad was then established in 1994. Subsequently, many organizations joined the Federation, including several from newly liberated countries of former Soviet Union. The Federation of Polish Medical Organizations and its member societies actively promotes medical education, collaboration between polish doctors all over the world, and the exchange of ideas-sharing experiences with significant emphasis on the quality of care and patient safety.

  4. Financial Structure of Mining Sector Companies During an Economic Slowdown /Struktura Finansowania Przedsiębiorstw W Sektorze Górniczym I Wydobywczym W Okresie Spowolnienia Gospodarczego

    NASA Astrophysics Data System (ADS)

    Sierpińska, Maria; Bąk, Patrycja


    The global economic crisis that started in 2007 in the area of finance, expanded over the subsequent years to the business sphere, and resulted in a drop of demand and production almost in any field of business activity. Access to foreign sources of finance, especially to loans, has become more difficult and expensive. In such circumstances, enterprises have had to resort more often to their own capital generated by the issue of shares, and to retained profit. Banks have limited their loans for business entities, reduced credit periods, and raised credit margins as well as their levels of collaterals. The McKinsey research into the changes that occur in the structures of sources of finance confirms that the share of equity capital in the structure of financing of non-financial enterprises has visibly grown, and their crediting scopes have been limited all over the European Union as well as in the euro zone. The global tendencies as regards directions of changes in the structure of the sources of corporate financing have also been reflected in Poland. The economic slowdown has resulted in changes in the structures of corporate financing. Mining companies have risen the shares of their equity capital in their general sources of financing. This tendency corresponds to the changes of structure of corporate financing in Poland and Europe. Enterprises have resorted to bank loans to a lesser degree than in times of better market situation. In mining, public companies have increased their crediting, while in private sector the tendency has been reverse. Enterprises tend to use more flexible debiting forms as compared to credits by way of issue of long-term corporate bonds. Mining companies have developed issue programs that are to be implemented over three-year periods. Before, only Katowicki Holding Węglowy [Katowice Mining Holding] had issued bonds. The present publication is an attempt at assessing the changes in the structure of corporate financing within the mining sector in the circumstances of economic slowdown. The changes have been assessed against the background of changes in the structure of financing of other business entities. Three problems have been identified and subjected to research. The first concerns the increasing share of equity capital in the structure of corporate financing in mining enterprises. The second issue concerns the scope of corporate crediting. And the third issue relates to the time structure of corporate debt. The said issues have been analysed in the conditions of economic slowdown

  5. New supersymmetric quartet of nuclei in the A{approx}190 mass region

    SciTech Connect

    Barea, J.; Bijker, R.; Frank, A.; Graw, G.; Hertenberger, R.; Wirth, H.-F.; Christen, S.; Jolie, J.; Tonev, D.; Balodis, M.; Berzins, J.; Kramere, N.; Egidy, T. von


    We present evidence for a new supersymmetric quartet in the A{approx}190 region of the nuclear mass table. New experimental information on transfer and neutron capture reactions to the odd-odd nucleus {sup 194}Ir strongly suggests the existence of a new supersymmetric quartet, consisting of the {sup 192,193}Os and {sup 193,194}Ir nuclei. We make explicit predictions for the odd-neutron nucleus {sup 193}Os and suggest that its spectroscopic properties be measured in dedicated experiments.

  6. Nuclear Medicine Program progress report for quarter ending December 31, 1990

    SciTech Connect

    Knapp, F.F. Jr.; Ambrose, K.R.; Callahan, A.P.; McPherson, D.W.; Mirzadeh, S.; Srivastava, P.C.; Allred, J.F.; Hasan, A.; Lambert, C.R.; Lambert, S.J.; Rice, D.E.


    In this report the development of a solvent extraction technique for the efficient separation of iridium radioisotopes from osmium radioisotopes is described. The Os-191 (Os-VIII) was efficiently separated from iridium-192 by extraction of a 1 M HCl solution with <10{sup {minus}2}M tetrahexylamine (THA) in methyl isobutyl ketone. Over 99% of the osmium is extracted in one step, leaving the radioactive iridium in the aqueous acidic solution. This simple extraction technique may be useful for the development of a new Os-194/Ir-194 generator prototype which is currently being explored. Also in this report, biodistribution studies of the two iodine-125 (I-125)-labeled spiroperidol analogues, E-3-N-(iodo-1-propen-3-yl)- and E-3-N-(iodo-1-penten-5-yl)spiroperidol in male Balb C mice are described. Several samples were supplied for collaborative research projects during this period and included I-125 and I-131 methyl-branched fatty acids, samples of tin-117m (Sn-117m), gold-199 (Au-199) and scandium-47 (Sc-47). 11 refs., 2 figs., 3 tabs.

  7. Organisational aspects of spatial information infrastructure in Poland

    NASA Astrophysics Data System (ADS)

    Bielecka, Elzbieta; Zwirowicz-Rutkowska, Agnieszka


    One of the more important elements of spatial information infrastructure is the organisational structure defining the obligations and dependencies between stakeholders that are responsible for the infrastructure. Many SDI practitioners and theoreticians emphasise that its influence on the success or failure of activities undertaken is significantly greater than that of technical aspects. Being aware of the role of the organisational structure in the creating, operating and maintenance of spatial information infrastructure (SII), Polish legislators placed appropriate regulations in the Spatial Information Infrastructure Act, being the transposition of the INSPIRE Directive into Polish Law. The principal spatial information infrastructure stakeholders are discussed in the article and also the scope of cooperation between them. The tasks and relationships between stakeholders are illustrated in UML, in both the use case and the class diagram. Mentioned also are the main problems and obstructions resulting from imprecise legal regulations. Jednym z istotniejszych komponentów infrastruktury informacji przestrzennej (IIP) jest struktura organizacyjna określająca zależności pomiędzy organizacjami tworzącymi infrastrukturę. Wielu praktyków i teoretyków SDI podkreśla, że wpływ aspektów organizacyjnych na sukces lub porażkę SDI jest dużo większy niż elementów technicznych. Mając świadomość znaczącej roli struktury organizacyjnej w tworzeniu, funkcjonowaniu i zarządzaniu infrastrukturą przestrzenną w Polsce, legislatorzy umieścili odpowiednie zapisy w ustawie z dnia 4 marca 2010 r. o infrastrukturze informacji przestrzennej, będącej transpozycją dyrektywy INSPIRE do prawa polskiego. W artykule omówiono strukturę organizacyjną IIP w Polsce, podając ( w postaci diagramów UML) obowiązki poszczególnych organów administracji zaangażowanych w jej budowę i rozwój, a także omówiono zależności i zakres współpracy pomi

  8. Influence of The Metamorphism Grade and Porosity of Hard Coal on Sorption and Desorption of Propane / Wpływ Stopnia Metamorfizmu I Porowatości Węgli Kamiennych Na Sorpcję I Desorpcję Propanu

    NASA Astrophysics Data System (ADS)

    Dudzińska, Agnieszka; Żyła, Mieczysław; Cygankiewicz, Janusz


    ęgla, jego stopnia metamorfizmu, zawartości pierwiastka tlenu, wilgoci i porowatości tych węgli. Największe ilości propanu sorbują węgle niskouwęglone, wysokoporowate o dużej zawartości tlenu i wilgoci. Sorpcja stosunkowo dużych ilości propanu tych węgli (ok. 10 cm3/g) jest wynikiem oddziaływania polarnej powierzchni węgli z cząsteczkami propanu oraz dobrej dostępności wewnętrznej mikroporowatej struktury tych węgli dla cząsteczek badanego sorbatu. Węgle średnio i wysokouwęglone sorbują niewielkie ilości propanu. Węgle te mają zwartą budowę oraz niepolarny charakter powierzchni, ich wewnętrzna struktura porowata jest w niewielkim stopniu dostępna dla cząsteczek propanu w warunkach przeprowadzanych badań. Sorpcja propanu w tym przypadku zachodzi głównie w powierzchniowych porach i na powierzchni węgli. Przeprowadzono również pomiary izoterm desorpcji propanu wykazując nieodwracalny charakter sorpcji. Izotermy desorpcji nie zbiegają się z izotermami sorpcji tworząc otwartą pętlę histerezy. Pozostające w węglu ilości nie desorbującego się propanu są zależne od rodzaju badanego węgla.